Spark plug



'April 29, 1924-v H. WAYTE SPARK PLUG Filed June 17. 1921 Hull- I r uHARRY Wavre, or

KALAMAZOO, MICHIGAN, ASSIGNOR ONE-HALF T0 HEIRIVIN GUMBINSKY, OFKALAMAZOO, MICHIGAN.

f SPARK PLUG'.

Appncanon flied June 1v, 1921. serial No. 478,307.

To all whom t may concern;

Be it known that I, HARRY WAYTE, a citi- YZen of the United States,residing in the city and county of KalamazooState of Michigan, haveinvented certainnew and useful Improvements in 4Spark Plugs, of whichthe following is a specification.

y This invention relates toiniprovements in spark plugs. l y The mainobjects of this invention are :y

First, to provide an improved spark plug which can be cleaned withoutremoving from the cylinder.

Second, to provide an improved. spark plug having this advantage inwhich the electrodes are stationary. Y

Third, to provide a spark plug having these advantages `which is verydurable and 'is not expensive to manufacture.

Further objects and objects relating to structural details, willkdefinitely appear from the detailed description to follow. Y,

Ik accomplish the objectsofmy invention y by the devices and meansdescribed kin the following specification. The invention is clearlydeiined and pointed outv in the claims. Y f

A structurewhich is ya rpreferred embodi ment of my invention is clearlyillustrated Vin the accompanyingdrawings, lforming a part of thisapplication inwhich: p.

F ig. I is a side view of an engine equipped with spark plugs embodyingmy improvements, the engine being shown conventionally. Y

Fig. II is a side elevation of one of my improved spark plugs.

Fig. III is a detail View mainly in vertical section on aA linecorresponding to line 3-3 of Fig. et.

Fig. IV is a horizontal section on a line corresponding` and III.

In the drawings, similar reference cha-racters refer to similar partsthroughout 'the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.

Referring to the drawings, 1 represents an engine. My improved sparkplug comprises a tubular body or shell 2 having an internal core seat 3at its outer end'for the insulating to line 4--4 ofy Figs.y yII core 4.The core 4f has an annular shoulder 5 coacting with the seat 3, apacking 6 being preferably provided for the seat.

'The body 2 is provided at its inner end with an internal flange 7providinga restricted opening 8. 'Ihe end of the body is recessed at 9.VThe body is provided with an annular external flange 10 providing aseat for the collar 11 carrying the discharge oonduity12.V The body hasradial passages 13 disposed between its said external and internalseats, while the collar is provided with an annular groove-like passagela registering with the radial passages 13. The corel is supported withits inner end spaced from but adjacent to the restricted opening 17.

The electrode 15 is supported by the core with its tip centrally locatedin the restricted opening/7. Y The coacting grounded electrode 16 ismounted on the body with its tip within the recess 8, that is, ritextends. across the .opening so that both electrodes are cleaned by theair and gasesy Vrushing through theopening. l.

The conduit 12 is provided with an inwardly seating checkvalve 17 andwith a manually controlled valve 18. The collar 11 is clamped uponkitsseat by means of the, nut y19 threaded upon the body.k This permits ofadjustment of the collar to bring kthe valve levers 20 into the desiredAoperating relation,y permittingk them being connected to the operatingrod 21, so that all of the valves may ybe opened at thek same time. Withthis arrangement when'the valves 18v are opened, the air on thecompression stroke Y and the gases on the explosion stroke are f I haveillustrated and described ymy improvements in the embodiment which Ifind very satisfactory, I have not attempted to Y illustrate lordescribe certain `modifications and adaptations which I contemplate, asI may be desired.

; Having thus described my invention, what I olaim'as new and desire tosecureby Letters Patent, is ,Y Y p 1. In a spark plug, the combinationof a tubular body having an internal core seat at its outer end and aninternal flange at its believe the disclosures made will enable vthoseskilled in the art to which my inven- Y e tion relates to embody oradapt the same asy I noKV tip providing a restricted central'opening,

the inner end of said body being recessed, said bodyl having an external'flange below Vsaid core-seat vand radial passages located between saidinternal and external seats, an insulating core disposed upon saidcoreseat with its inner end adjacent to said restrictked openingatthevinner end oAsaid-body,

an insulated electrode supported Yby said core with its tipcentrally ofsaid restricted opening, an electrode mounted on said body 'withf itstipdisposed centrally in said ref cess thereof, aY collar mounted on saideX- Vternal seat and provided with a discharge at itsouter end and aninternal flange at its tip providing a restricted centralV opening, said,body having an external flange belou7 said core seat and radialpassages located between said internal and external seats, an

insulating core disposed upon Vsaid vcore seat with its inner endadjacent tosaid restricted opening at the inner end of said body,anelectrode supported by said corey with its tip' centrally" of' saidrestricted'opening, a collar inouiit'edon said eiliternalV seat and'provided with a discharge conduit a'iid'with Yan yannular grooveopening thereto .and registering with said radial passages, a manuallycontrolled'valve for said discharge Aconduitlanfd an inwardly seating"check valve therefor disposed at the'inner side offsaid `manuallycontrolled valve, and a clamping nut for said collar threaded upon saidbody whereby the collar may be adjustedrto position the manuallycontrolled valve.

8. ln a spark plug, the coinb'inationoi' a tubular body having arestricted opening at its inner end and an external seat and radialpassages above said seat, an insulating core, an electrode supported bysaid core with its tip within vsaid restricted opening,

a coacting electrode disposed adjacent said opening, a'fcollar mountedon said external seat and provided with a discharge conduit and with anannular groove opening thereto and registering withsaid radial passages,a manually controlled valve for said` discharge conduit and an inwardlyseating check valve therefor disposed at the inner side of said manuallycontrolled valve, and

a clamping nut for said collar threaded upon said 'body whereby thecollar may be adjusted to position the manually controlled valve. K

' 1i. ln a sparlrf plug,'the combination of a tubularbody having anlexternal seat and radial passagesv above said seat, an insulating core,an electrode supported by said core, a collar mounted on saidyexternal'seat and provided with adischargeconduit and with Van annularYgroove opening thereto and registering with said radial passages,amanually controlled valve forsaid discharge conduitand an inwardlyseating check/valve therefor disposed at the inner side of Vsaidmanually controlled valve, and a clamping nut for said collar threadedupon said body whereby the collar may be adjusted to positionthe-manually controlled valve.

In witness whereof I'liave hereunto set my hand and seal.

Y HARRY AYTE.

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